Locality: Along the Acre River and the tributaries between the municipalities of Brasileia and Assis Brasil, Acre State, Brazil.

Horizon: Solimoes Formation.

Biostratigraphy:

Age: Lower Eocene Stage, Paleogene Period, Lower Tertiary Subera, Lower Cenozoic Era.

Material:

DGM 964-R, DGM 965-R, DGM 1080-R, DGM 1129-R, DGM  1167-R, DGM 1206-R, DGM 1209-R, DGM 1225-R: Teeth.

DGM 1291-R: Mandible.